Linear Regression

Linear function and linear regression sound alike but they do completely different jobs. One follows a rule. The other discovers one. And once you see the difference, a lot of data science starts to make sense. A Tale of Two Lines You and your friend both work part-time at a bubble tea shop. You get paid $15 per hour. Simple. After 3 hours you know you’ve earned $45. After 6 hours, $90. There’s a perfect formula. No surprises, no guessing. ...